Moses Farrow is standing by his adoptive father Woody Allen amid allegations that the filmmaker sexually abused his sister Dylan.

In response to Dylan's open letter, in which she describes her adoptive father molesting her when she was 7, Moses says their mother Mia Farrow is to blame for turning Dylan against Allen.

"My mother drummed it into me to hate my father for tearing apart the family and sexually molesting my sister," Moses told People. "And I hated him for her for years. I see now that this was a vengeful way to pay him back for falling in love with Soon-Yi [Previn]."

Charges of sexual abuse were first brought against Allen in 1992 in the middle of the former couple's custody battle over Moses, Dylan and their son Ronan Farrow after Mia discovered Allen had begun an affair with her adopted daughter Soon-Yi. Authorities investigated and Allen was never charged.

"Of course Woody did not molest my sister," Moses, 36, said. "She loved him and looked forward to seeing him when he would visit. She never hid from him until our mother succeeded in creating the atmosphere of fear and hate towards him. The day in question, there were six or seven of us in the house. We were all in public rooms and no one, not my father or sister, was off in any private spaces. My mother was conveniently out shopping. I don't know if my sister really believes she was molested or is trying to please her mother. Pleasing my mother was very powerful motivation because to be on her wrong side was horrible."

Allen's lawyer Elkin Abramowitz tells a similar story to Moses', claiming that Dylan's memory of the sexual abuse was "implanted" by Mia.

But Dylan's story and conviction has not wavered. "This is such a betrayal to me and my whole family," Dylan said in response to her brother's comments. "My memories are the truth and they are mine and I will live with that for the rest of my life.

"My mother never coached me," Dylan continued. "She never planted false memories in my brain. My memories are mine. I remember them. She was distraught when I told her. When I came forward with my story she was hoping against hope that I had made it up. In one of the most heartbreaking conversations I have ever had, she sat me down and asked me if I was telling the truth. She said that Dad said he didn't do anything. and I said, 'He's lying.'"

Moses, however, paints a very different picture of Mia, accusing her of being an abusive mother. "Our mother has misled the public into believing it was a happy household of both biological and adopted children," he said. "From an early age, my mother demanded obedience and I was often hit as a child. She went into unbridled rages if we angered her, which was intimidating at the very least and often horrifying, leaving us not knowing what she would do."

"I don't know where he gets this about getting beaten," Dylan said in response. "We were sent to our rooms sometimes.

"I will not see my family dragged down like this," she added. "I can't stay silent when my family needs me and I will not abandon them like Soon-Yi and Moses. My brother is dead to me. My mother is so grave and so courageous and taught me what it means to be strong and brave and tell the truth even in the face of these monstrous lies."

Moses, who is estranged from Mia, Dylan and many of his other siblings, says his sister is missing out on a relationship with her father. "I think my sister is missing a great deal in life not reconnecting with her father, who had always adored her," he said. "It's important that she assert her independence from our mother and not go through life with the false impression that she has been molested by my father. I am very happy I have come into my own power, separating from my mother, which has led to a positive reunion with my father."